The anti theft door key is inserted and only half a turn is twisted and can no longer be screwed, wh

First, make sure that your key is correctly matched to the security door.

Second, if it does, please open it with the spare key of the security door configuration. If it can't be opened, rule out the problem with the key.

Third, it may be a problem with the door lock or lock cylinder. It is often used to make the lock cylinder with professional lubricating oil (not expensive) or lead core graphite shavings.

Fourth, lubrication does not work, that is, the lock cylinder is damaged, if you can, please replace the lock.

1.You need to make sure that the key is not damaged, bent or other special cases, and it is best to try again with a backup key.

2.After trying 1 step, it is basically determined that it is the problem of the lock cylinder, you can use the key or paper strip to fold it into a V shape and gently feed or blow it into the lock hole, and then use the key to try to turn it many times, repeating 5 or 6 times.

3.If it can't be solved, you can spray the rust remover on the lock hole, turn it with the key, spray it again, repeat it a few times, and you can knock it and shake it.

4.The above is a simple way that the average family can deal with, and if it can't be solved, it can only be dealt with by professional lock repair personnel.

After the anti-theft door key is inserted in, it can only be half a circle and never move, it may be that the internal structure of the anti-theft door lock is faulty, it is recommended not to move again, and immediately ask the locksmith to come to repair.

The anti-theft door key is inserted and only half a turn is twisted and can no longer be screwed, what should I do

Hello dear. We'll be happy to answer for you. "You need to make sure that the key is damaged, bent and other special circumstances, and it is best to try again with a backup key.

After trying 1 step, it is basically determined that it is the problem of the lock cylinder, you can use the vertical hand key or paper strip folded into a V shape to gently feed or blow into the lock hole, and then use the key to try to turn it many times, repeat 5 or 6 times. If it can't be solved, you can spray the rust remover on the keyhole, turn it with the key, and then spray it, repeat a few fiber rounds, and you can knock it and shake it. "I hope I can help my kiss, I wish my kiss good health and all the best!

Do not use oil, you should use the graphite shavings of the pencil lead to lubricate.

Find a local professional locksmith, but the lock cylinder is broken.

The anti-theft door key is inserted and only half a turn is twisted and can no longer be screwed, what should I do

Hello, I am glad to answer for you the anti-theft door key inserted into only half a circle can no longer be screwed, what to do 1, check whether the anti-theft door key is correct, the anti-theft door hunger key and the limb lock is not damaged. 2. The anti-theft door key is not in the right position when inserted into it, and some of it is caused by the dislocation of the lock cylinder, you can press the keyhole with your hand, and then you can move the key with the other hand to try it. 3. The lock cylinder is astringent, and the key and the bullet are stuck, at this time, use universal lubrication rust remover to spray into the lock hole, move the key, and then try to turn.

4. Find an anti-theft door repair and lock replacement master to help you open it.